Dataset Information

Ambient Processed rGO/Ti₃CNT_x MXene Thin Film with High Oxidation Stability, Photosensitivity, and Self-Cleaning Potential.

ABSTRACT: Solution-based processing offers advantages for producing thin films due to scalability, low cost, simplicity, and benignity to the environment. Here, we develop conductive and photoactivated self-cleaning reduced graphene oxide (rGO)/Ti₃CNT_x MXene thin films via spin coating under ambient conditions. The addition of a thin rGO layer on top of Ti₃CNT_x resulted in up to 45-fold improvement in the environmental stability of the film compared to the bare Ti₃CNT_x film. The optimized rGO/Ti₃CNT_x thin film exhibits an optical transmittance of 74% in the visible region of the spectrum and a sheet resistance of 19 kΩ/sq. The rGO/Ti₃CNT_x films show high rhodamine B discoloration activity upon light irradiation. Under UV irradiation, the electrically conductive MXene in combination with in situ formed semiconducting titanium oxide induces photogenerated charge carriers, which could potentially be used in photocatalysis. On the other hand, due to film transparency, white light irradiation can bleach the adsorbed dye via photolysis. This study opens the door for using MXene thin films as multifunctional coatings with conductive and potentially self-cleaning properties.

SUBMITTER: Purbayanto MAK

PROVIDER: S-EPMC10520912 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature

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Ambient Processed rGO/Ti3CNTx MXene Thin Film with High Oxidation Stability, Photosensitivity, and Self-Cleaning Potential.

Purbayanto Muhammad Abiyyu Kenichi MAK Bury Dominika D Chandel Madhurya M Shahrak Zhila Dehghan ZD Mochalin Vadym N VN Wójcik Anna A Moszczyńska Dorota D Wojciechowska Anita A Tabassum Anika A Naguib Michael M Jastrzębska Agnieszka Maria AM

ACS applied materials & interfaces 20230908 37

Solution-based processing offers advantages for producing thin films due to scalability, low cost, simplicity, and benignity to the environment. Here, we develop conductive and photoactivated self-cleaning reduced graphene oxide (rGO)/Ti3CNTx MXene thin films via spin coating under ambient conditions. The addition of a thin rGO layer on top of Ti3CNTx resulted in up to 45-fold improvement in the environmental stability of the film ...[more]

PMID: 37682978

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Project description:Large-scale commercial synthesis of bulk-heterojunction (BHJ) solar cell materials is very challenging and both time and energy consuming. Synthesis of π-conjugated polymers (CPs) with uniform batch-to-batch molecular weight and low dispersity is a key requirement for better reproducibility of high-efficiency polymer solar cells. Herein, a conjugated polymer (CP) PTB7-Th, well known for its high performance, has been synthesized with high molecular weight and low dispersity in a closed microwave reactor. The microwave reaction procedure is known to be more controlled and consumes less energy. The precursors were strategically reacted for different reaction time durations to obtain the optimum molecular weight. All different CPs were well characterized using 1H NMR, gel permeation chromatography (GPC), UV-vis, photoluminescence (PL), electron spin resonance (ESR), and Raman spectroscopy, whereas the film morphology was extensively studied via atomic force microscopy (AFM) and grazing incidence X-ray diffraction (GIXRD) techniques. The effect of molecular weight on a conventional BHJ solar cell with PC71BM acceptor was investigated to derive systematic structure-property relationships. The CP obtained after 35 min of reaction time and integrated into BHJ devices under ambient conditions provided the best performance with a power conversion efficiency (PCE) of 8.09%, which was quite similar to the results of CPs synthesized via a thermal route. An enhanced PCE of 8.47% was obtained for the optimized polymer (35 min microwave reaction product) when device fabrication was carried out inside a glovebox. The organic thin-film transistor (OTFT) device with the microwave-synthesized CP displayed better hole mobility (0.137 cm2 V-1 s-1) as compared to that with the thermally synthesized CP. This study also proved that the device stability and reproducibility of the microwave-synthesized CP were much better and more consistent than those of the thermally developed CP.

Dataset Information

Ambient Processed rGO/Ti₃CNT_x MXene Thin Film with High Oxidation Stability, Photosensitivity, and Self-Cleaning Potential.

Publications

Ambient Processed rGO/Ti<sub>3</sub>CNT<sub><i>x</i></sub> MXene Thin Film with High Oxidation Stability, Photosensitivity, and Self-Cleaning Potential.

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